Don’t worry about this situation often (inet6 addr :fe80::20c:29ff:fe47:fd61/64 scope:link1). Try this method. This is also something I have tortured for many days. Don’t criticize if you don’t like it. Thank you.
Virtual machine settings permissions: sudo chown book:book fs_mini_mdev -R
Virtual machine change IP: ifconfig eth0 192.168.0.22
1. Dynamic IP address
You can modify /etc/network/interfaces file to dynamically allocate IP addresses
auto lo
iface lo inet loopback
auto eth3
iface eth3 inet dhcp
After each startup, the router assigns an IP address, then use the ifconfig command to view the current IP address, and then use the sudo ifconfig eth3 192.168.*.*** command to set the IP address to the planned value.
eg:book@book-desktop:~$ ifconfig
book@book-desktop:~$ sudo ifconfig eth3 192.168.1.184
2. Static IP address
If you enter the method of sudo ifconfig eth0 192.168.*.*** in the terminal, it is just that the current login is valid. You can modify the /etc/network/interfaces file to achieve a fixed IP address every time you boot.
book@book-desktop:~$ sudo gedit /etc/network/interfaces
Add settings for eth0.
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.0.***
gateway 192.168.0.1
netmask 255.255.255.0
Among them, static is a static IP, set the IP address to 192.168.0.***, gateway network management bit 192.168.1.1, and netmask subnet mask bit 255.255.255.0.
Press ctrl + s to save the settings, and ctrl + q to exit the settings of gedit.
3. Restart the network card and restart the network service
Turn off first and then turn on the network card, and restart the network service.
sudo ifconfig eth0 down
sudo ifconfig eth0 up
sudo /etc//networking restart
After restarting the network service, enter the Ifconfig command in the terminal to verify whether the ip address is modified successfully.
4. Turn off the firewall of ubuntu
Use the sudo ufw disable command to close the firewall of ubuntu.
book@book-desktop:~$ sudo ufw disable
Firewall stopped and disabled on system startup
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